#define  _CRT_SECURE_NO_WARNINGS 1	
#include<stdio.h>
int main()
{
    int a = 0, b = 0;
    scanf("a=%d,b=%d", &a, &b);
    a = a ^ b;
    b = a ^ b;
    a = a ^ b;
    printf("a=%d,b=%d", a, b);
}
